Chemistry question..help me?

identify sodium sulfate, add little barium nitrate solution white precipitate baso4


, can identify sodium chloride solution adding little lead ii nitrate solution white precipitate, pbcl2.

other solutions, nitric acid , potassium iodide give no precipitates these 2 substances

sodium sulphate , sodium chloride can identified using
a. dilute nitric acid
b. potassium iodide solution
c. lead (ii) nitrate solution
d. barium nitrate solution

alot!

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